Energy measurement system of a large-aperture high power laser experiment platform

被引：0

作者：

Xia, Yanwen ^{[1
]}

Liang, Yue ^{[1
]}

Li, Sen ^{[1
]}

Zhao, Junpu ^{[1
]}

Peng, Zhitao ^{[1
]}

Li, Hongguang ^{[2
]}

Liu, Hua ^{[1
]}

Sun, Zhihong ^{[1
]}

Zheng, Kuixing ^{[1
]}

Wei, Xiaofeng ^{[1
]}

机构：

[1] CAEP, Res Ctr Laser Fus, POB 919-988, Mianyang 621900, Peoples R China

[2] Chinese Acad Sci, Xian Inst Opt & Fine Mech, Xian 710119, Shaanxi, Peoples R China

来源：

HIGH POWER LASER SCIENCE AND ENGINEERING | 2013年 / 1卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

Laser diagnostics; pulse energy; calorimeter; high power laser;

D O I：

10.1017/hpl.2013.21

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An energy measurement system in a large-aperture high power laser experiment platform is introduced. The entire measurement system includes five calorimeters, which carry out the energy measurement of the fundamental frequency before the frequency conversion unit, remaining fundamental frequency, remaining second-harmonics, third-harmonics, as well as the energy balance measurement after the frequency conversion unit. Combinational indirect calibration and direct calibration are employed to calibrate the sampling coefficients of the calorimeters. The analysis of the data showed that, regarding the energy balance coefficients, combinational calibration approach gives a higher precision, and leads to an energy balance with 1%; and regarding the energy sampling coefficients for the various wavelengths after the frequency conversion, the results from direct and combinational calibration are consistent. The uncertainties for all energy sampling coefficients are within 3%, which guarantees the reliability of the energy measurement for the laser facility.

引用

页码：126 / 131

页数：6

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